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G. O. PYLE. Horseshoe Machine.

- Patented N241 9, 1880.

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G. C. PYLE. Horseshoe Machine. No. 234,200. Patented Nov. 9,1880.

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4 Sheets-Sheet 4v G. C. PYLE.

Horseshoe Machine. No. 234,200. Patented Nov. 9,1880.

Witnesses. Inventor.'

N PEIERS, PNoT-LITMDGRAPHER WASHINGTQN. D C.

UNITED STATES PATENT OFFTCE.

GEORGE O. PYLE, OF WILMINGTON, DELAWARE, ASSIGNOR TO DANIEL H. KENT, OF SAME PLACE.

HOR'SESHOE-IVIACHINE.

SPECIFICATION forming part of Letters Patent No. 234,200, dated November 9, 1880. Application filed October 2, 1879.

To alt whom it may concern Be it known that I, GEORGE O. PYLE, of the city of Wilmington, county of New Castle, State of Delaware, have invented certain new and useful Improvements in Horseshoe-Machines, of which the following is a specification.

In the accompanying drawings, Figure l is a plan, and Fig2 a side elevation, of my in- 1o vention. Fig.3 is a vertical longitudinal section upon the line x x of Fig. l. Fig. 4 is a plan of the machine upon the level of the shoeformers, the parts above being removed. Fig. 5 isan end view, and Fig. 6 a cross-section upon the line y y of Figs. l and 2. lFig. 7 is a detail section of the hammer. Fig. 7X is an elevation of the feed-rollers viewed in the direction of the feed. Fig. S is an elevation of the same viewed in a direction perpendicular zo to the line of feed. Fig. 9 is an elevation showing the stop which holds the hammerframe down while the hammer is in action.

Fig. l0 is a vertical transverse section on the line of the main shaft.

Corresponding letters indicate corresponding parts wherever used.

In the drawings, A represents a suitable frame-work, of metal, of a machine embodying duplicate sets of shoe-forming mechanisms, 3o either of which may be used separately when desired. Of course, if a machine were originally made with but one set of these mechanisms, some details of the devices which operate them would need change; but such changes are possible to any skilled mechanic without invention.

In my description of parts, which are duplicated at each end of the machine, I shall confine the description to one of them.

4o Power is communicated to the machine through the pulley A upon the shaft A2, which also bears a iiy-wheel, A3

The bar from which the shoes are formed is fed to the operating devices by a spring-de- 4 5 pressed feed-roll, B, one end whereof is a bevelgear meshing into another gear, B', upon a shaft, B2, operated through a universal joint, b, by gears B3, B4, and B5, the latter being upon the shaft A2. The roll B revolves upon the rounded end of a piece, BG, resting in a 5o pivoted arm, b', and in another' top recess in the arm b2, projecting out from the framework, it thus being free to rise and accommodate the thickness of the incoming metal, which rides upon the anti-friction roller or rollers b3.

The spring B7 depresses lthe part B6 and the roll at all times. The shaft BZ has its upper bearing in the part BG, and the shaft B8, to which it is connected by the universal joint, 6o carries the gear B3, before mentioned. This gear, however, is loose upon said shaft, and is provided with recesses upon its side, which are clutched, when desired', by the points B9, projecting outward from the shaft, the wheel being shifted by an elbow-lever, Bm, attached to the frame-work, a connecting-rod, B, and a Y-shaped piece, B, setting down upon the sleeve of the gear. This clutch is intended to be used only when it is desired to start or stop 7o the feed, which is done by the attendant through the medium ofthe elbow-lever. The rotation of the feed-roll B is, under ordinary circumstances, continuous, but maybe stopped very readily and quickly in the way described. 7 5

When the forward end of the bar has reached the gage O a blank for a single shoe is cut oi` by the knife G', borne upon a shaft, O2, and partially rotated downward with a positive force sufficient to insure the work of the knife 8o by a cam, b4, upon the wheel B4, and a lever, O3, secured to the shaft O2, with which lever said cam comes in contact at each revolution. When the blank has been severed the knife remains opposite the opening fi, through which the bar issues from the feed-roll, and prevents all further feed of material until the bending parts have returned and are ready to receive another blank, when it is thrown up and back to its first position by the spring G4, secured 9o to the lever C3and to the mat-e of said lever at the other end of the machine orto afixed point.

In point of time this severing takes place while the bending-jaws and former or shapingblock-presently to be described-are in the position shown at the right of Fig.4. The severed blank falls with its ends resting upon reciprocating slides D, and behind a bar, D',

secured at either end to said slides b v pins d, llpoii which it is at liberty to rise and fall, and in front of the iaws and former. The blank is then carried bythe backward reciprocation of the slides and the bar, thejaws also retreat ing at theI same time and the former sinking below the plane ofthe blank, so as to otfer no obstruction until the parts have reached the position shown in Fig. l. at the left. The blank may be held against longitudinal play during this movement by stops nl upon the slides, it' necessary. The blank now rests with its center over the annular anvil 1)'2, surrounding the shapingblock, and is ieady for bending. lefore the bending eoiiinielices the said former 1) rises from its sunken position, raising with it the bar 1)', and detaining the latter in the elevated position until the completion ofthe forward movement, which is next in oi-dei. Tile bending-jaws 1)* are now forced fiuward simultaneously, and eaeli seizing an end of the blank, bend ii around the forming-block 1), completing this portion of their otlice when they have reached the position from which they started-viz., that shown at the right of Fig. 4. The said foriiiing-bloek extendsdown through the portion of the frame in which it is held, and is intermittingl raised and lowered at proper times by the cani 1) upon the shaft 1), bearing the said wheel l, such eain being continued sutiieiently to sustain the former during the length of time it is required to be held in the raised position, and when that period is overit drops by its own gravity. The bent \viiel)", depending from the former, is for the. puipose of freeing the former with certainty from the embrace of the formed shoe, which it is caused to do by the contact with it ofthe pin IT upon the side of the caiii 1);. This device, or some other accomplishing the same result, l tnd to be essential, as gravity is not always suteient for the purpose.

The bendingjaws 1) are pivoted at their rear ends in a sliding head. 1), and at their forward ends are connected to the stationary fraiiie-work by tie-rodsor bars 1), but they come in contact in their forward reciprocatioii each with a rotatingeam, Dl, and are by such cams forced to their work of bending the blank around the shaping-block 1)". Said cams are mounted upon vei-tieal shafts 1), receivingliiiotoii through the gears 1) and 1) from the shaft DG. The rounded portions of the cams produce a dwell by thc jaws in the positions they occupy while compressing the bentr blank around the shaping-block sutliciently long to permit the metal to set in its new shape and to allow the hammer to operate thereon, as hereinafter specified.

The head 1)U is iiiipelled forward by one or more swinging levers, 1), secured at the free end to the head, and at the bottom pivoted to the frame and operated interinittingly by rotating eoeentrics Dl, mounted upon the shaft D16, and motived by the large gear D" and the gear B5, already mentioned.

The eccentrics Dl5 may be made ot' horizontal bars held in suitable framework, 1), secured to the said shaft D16.

The conformation of the arms I)H should be sueh thatl they continue to receive force from the eecentrics during the period of the dwell, before stated, of the bending-jaws. As soon as the cccentrics pass beyond contact the springs D2", secured at either end to the heads 1), (or, in case of a single machine, secured at one eud,to a stationary point,) pull the head and the parts connected therewith back to thc position shown at the left of Fig. L -viz., the position occupied by them previous to thc com inencement of the bending operation. The slides l) are also connected to the head 1) by tie-connections 1)'2'.

The bending being now completel and thc blank being closely confined in the recess formed between the bending-jaws and the forming-block above the annular anvil, l subject the blank to a forging operation designed to finish the shaping, to impart the desired inipress to the tlat sides of the shoe, and to coin pact and densify the material. This I do by means of the hammer 1*). This hammer reciprocates in a vertical opening through a rigid part, A, of the frame, and is guided by guideways at the front and rear of said opening, tau-responding with the projections e upon the hammer, which occupy said ways. Uen trally through the hammer passes a rod, E', cushioned above and below by springs e, and with its ends inserted in pitineii E2, connected with cranks in the shaft E, which is actuated from the gear 1i" and the large gear D, which communicate such motion, by pulleys l and E* and their connecting-belts, to the hammershaft.

The impact of the hammer is caused to be intermittent, although its motion is coiitiiinons, by the raising at proper intervals of the frame l", which supports its shaft. This is done by levels 1 1",pivoted at e9, which are raised by cams 110 upon the shaft 1)", said levers, in their turn, raising said frame E sufi cieiitly' to take, the hammer out of reach during the feeding in and bending ofthe blank.

To steady the hammer during the, forging, and to prevent unnecessary' upward rebound, 1 lock the frame E down while that operation is in progress by catch-levers Ell upon said frame and pins E12 upon the stationary' or main frame ofthe machine. These catches are automatically thrown into and outy of engagement with the pins at the proper times by a pin, E, upon the wheel B4, which, at every revolution of said wheel, strikes a lever, E, keyed upon a shaft, E, causing said shaft to move through a partial revolution, and thereby to vibrate the cranks E16 upon said shaft, and thereby, through the connecting-pieces E", to move the catch-levers. 0f course, the

hammer is provided with a die, El, hollow interiorly, so as to allow it to set down over thc shapingblock.

IIO

In order that the ham mer and anvil may not come in contact at times when no material is being fed into the machine, I have provided an automatic arrangement preventing such contact and the consequent injury to the parts which would be caused thereby. This arrangement consists of a trip, G, pivoted to the main frame at g, and provided with a lateral arm, g', extending to the under side ofthe shaft of the feed-roll B, and compelled to press up against said shaft by a counter-balance, g2, applied to the opposite side of the trip. It results from this construction that whenever the material ceases to be fed to the feed-roll and said roll drops in obedience to its spring, the shaft of the feed-roll tilts the trip, so that when the hammer-frame descends it will rest upon the trip in the manner shown in Fig. 5. When the feeding is resumed the trip will be automatically tilted back by its counter-balance.

The completed shoe is thrust out of the machine by the new blank and the bar D when they move back, and it falls upon a chute, H, which conducts it to the front of the machine.

The boxes of the cam shafts D11 are made movable within certain limits to permit the taking up of the wear. They are provided with flanges o, which rest upon shoulders o', and are held iirmly by a set-screw, o2, and wedges o3 and screw o4. When they need adjusting one of the wedges is moved by the screw 01, and after adjustment the screw o2 may be tightened upon the box.

In the duplicate machine shown in the drawings, it will be noticed that the operations of the two sets of mechanisms alternate with each otherthat is to say, while the blank is being bent by one set another blank is being forged by the other set. This I am enabled to do by placing the eccentrics or cams which operate the heads carrying the bending-jaws upon the same shaft and by properly timing them thereon.

The hammer-shaft is so timed that it causes the hammer to give several blows to the shoe while it is imprisoned by the forming mechanisms. This insures perfect results, because the shoe is unable to spread at the sides, and must therefore be much solidied and made to conform very perfectly to the dies upon the hammer and anvil, giving it thus a tine and smooth finish.

The eccentrics upon the shaft D16 are of peculiar construction, and are adjustable with great nieety. They consist of bars D15, laid horizontal and parallel to the shaft, and are held between set-screws m m, setting against the same from opposite directions, there being two at each end of the bar.

What I claim, and desire to secure by Letters Patent, is-

l. In a machine for making horseshoes, the combination, with mechanism for bending the blank, of a continuously-running hammer, E, the crank-shaft E3, and swinging frame E14, which is pivoted coincident with the axis of the driving-shaft E6, and mechanism for operatin g said frame, whereby said hammer may be raised out of action without ceasing its reeiprocation.

2. The hammer E, hammer-frame E14, bending mechanism, feed mechanism, and anvil, all substantially as described, combined with a trip, G, controlled by said feed mechanism, and thereby caused to arrest the hammerframe whenever said feed mechanism is not acting upon material.

3. The frame E14, whereon the hammer and its driving crank-shaft are mounted, combined with the lever E9, which moves upon a point behind and below the shaft E11 and bears upon said frame at a point in front of said shaft, and the cam E10 near to the eX- tremity 0f said lever, whereby said frame is periodically raised and lowered, as set forth.

4. A forging mechanism consisting of a frame, E14, pivoted at the extremity of its side arms to the main frame around the shaft E6, mechanism for operating said frame, and a hammer suspended in said frame by a rotating crank, E3, combined with driving-pulleys upon said shaft E6, and connecting-belts, whereby said hammer may be raised so that it will not deliver its blow, but without pausing in its reciprocation.

5. The pivoted frame E147 within which the hammer and its driving-shaft are mounted, combined with the feeding-rollers, the upper one whereof may move up and down to conform to the thickness of the material to be fed, and the hell-crank arm G, pivoted to the main frame of the machine, and controlled by said movable feed-roller, and provided with the counterbalance-weight g2, whereby, when no material is between the feed-rollers, said arm Gr will be caused to arrest the frame E14, and when the feed is in action it will be thrown back out of engagement therewith.

6. In a horseshoe-machine, the combination of feeding mechanism feeding the blank in front of the forming mechanisms, the forming mechanisms having a shaping-block which sinks when the shoe is finished, and a pushbar carried by reciprocating mechanism, and operating to discharge the finished shoe and to move the next blank into position by a single movement, substantially as specified.

7. The combination, with the bending mechanism having a shaping-block which sinks when the shoe is to be discharged, of a reciprocating pushing-bar for positioning the severed blank with reference to the bending mechanism, and which bar is caused to rise out of the way when that mechanism is operating, substantially as specified.

8. In combination with an intcrmittinglystriking hammer, the latch E11 and stop E12, for locking the frame supporting the hammer against rebounding while the hammer is striking, substantially as specified.

9. The eccentrics upon the shaft D16, constructed of longitudinal bars mounted in a IOS IIO

frame-work secured upon the shaft and adjustl 1l. The trip (l, jointly with the mechanism ablein suoli fratrie-work,substantially as speuil t'or operating the same, whereby said trip is fied. autoniatiuallv brought into action to arrest and 1U. The feed-roll B, mounted on the end ot' hold up tho t'ralno E whenever there is no niathe bar B6, which is movable in a vertical terial between the feed-rolls.

plane, and depressed by the spring' lli, eomi bined with the driving-gear Il upon the shaft B2, which also has its bearin; r in the bar ll, l \\'itnesses:

and the driving-pinion Il and flexible coni lo nection b, for the purpose stated.

GEORGE C. PYLE.

ll. M. MUNDAY, Enw. S. EVARTS. 

